Embodiments of the application provide a control channel transmission method, a network device, a network controller, and a terminal device, to avoid a resource collision between physical downlink control channels (PDCCHs) of a plurality of network devices. The method includes: receiving, by a first network device, resource group indication information sent by a network controller, where a resource indicated by the resource group indication information does not overlap a resource used by another network device; determining, by the first network device, a first search space based on a user equipment UE-specific search space and the resource group indication information; and sending, by the first network device, a first PDCCH to the terminal device through the first search space.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method of control channel transmission, comprising: receiving, by a first network device of a plurality of network devices, a piece of resource group indication information from a network controller; determining, by the first network device, a first search space based on a search space specific to a terminal device and the piece of resource group indication information, wherein the search space comprises a plurality of subspaces, each of the plurality of subspaces corresponding to a different one of a plurality of resource groups, wherein resources in any two of the plurality of resource groups do not overlap, where each of the plurality of resource groups is allocated to a different one of the plurality of network devices, wherein the plurality of resource groups are determined according to a preset rule and a quantity of the plurality of network devices, the preset rule comprising evenly allocating resources in a preconfigured control resource set based on the quantity of the plurality of network devices to obtain the plurality of resource groups, or proportionally allocating resources in the preconfigured control resource set based on channel quality of a plurality of channels between the terminal device and the plurality of network devices to obtain the plurality of resource groups; and sending, by the first network device, a first physical downlink control channel (PDCCH) to the terminal device through the first search space.
This invention relates to control channel transmission in wireless communication systems, specifically addressing efficient resource allocation for physical downlink control channels (PDCCH) in multi-device networks. The problem solved is the need to manage control channel resources when multiple network devices (e.g., base stations or access points) serve a single terminal device, ensuring non-overlapping resource allocation while optimizing channel quality. The method involves a first network device receiving resource group indication information from a network controller. The device then determines a first search space for PDCCH transmission, which is derived from a terminal-specific search space and the received indication. The search space is divided into multiple subspaces, each corresponding to a distinct resource group allocated to a different network device. These resource groups are non-overlapping and are determined either by evenly distributing resources from a preconfigured control resource set based on the number of network devices or by proportionally allocating resources based on the channel quality between the terminal and each network device. The first network device then transmits a PDCCH to the terminal through the determined search space. This approach ensures efficient resource utilization and minimizes interference by dynamically allocating control channel resources according to network conditions and device capabilities.
2. The method according to claim 1 , wherein the plurality of subspaces are discretely distributed in the plurality of resource groups.
A method for managing wireless communication resources involves organizing available resources into multiple resource groups and further dividing these groups into subspaces. The subspaces are distributed discretely within the resource groups, meaning they are distinct and non-overlapping. This approach improves resource allocation efficiency by allowing independent management of each subspace, reducing interference and optimizing usage. The method is particularly useful in wireless networks where dynamic resource allocation is critical for maintaining performance and reliability. By discretely distributing subspaces, the system can adapt to varying demands and conditions, ensuring better utilization of available resources. This technique is applicable in various wireless communication standards, including 5G and beyond, where efficient resource management is essential for supporting diverse services and devices. The discrete distribution of subspaces enables more precise control over resource allocation, leading to improved network performance and user experience.
3. The method according to claim 1 , wherein the method further comprises: sending, by the first network device, the piece of resource group indication information to the terminal device, wherein the piece of resource group indication information indicates a resource location of a resource group corresponding to the first network device.
This invention relates to wireless communication systems, specifically methods for managing resource groups in a network. The problem addressed is the need for efficient resource allocation and signaling between network devices and terminal devices to ensure proper resource utilization and communication. The method involves a first network device, such as a base station, managing a resource group and providing resource group indication information to a terminal device, such as a user equipment (UE). The resource group indication information specifies the resource location of a resource group associated with the first network device. This allows the terminal device to accurately identify and access the resources allocated by the first network device, improving communication efficiency and reducing signaling overhead. The method may also include the first network device receiving a resource group indication request from the terminal device, which triggers the sending of the resource group indication information. Additionally, the first network device may receive a resource group indication confirmation from the terminal device, confirming successful reception of the resource group indication information. This ensures reliable communication and proper resource allocation. The resource group indication information may be sent via a physical downlink control channel (PDCCH) or another suitable downlink channel, depending on the network configuration. The resource group may include time-frequency resources, such as orthogonal frequency-division multiplexing (OFDM) symbols or resource blocks, allocated for uplink or downlink communication. The method ensures that the terminal device can efficiently locate and utilize the allocated resources, enhancing overall network perfor
4. The method according to claim 1 , wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on an aggregation level.
This invention relates to wireless communication systems, specifically to methods for managing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is the efficient allocation and utilization of CCEs within a search space to improve control channel detection and resource management in wireless networks. The method involves defining a search space specific to a terminal device, where the search space is divided into multiple subspaces. Each subspace contains a plurality of CCEs, and the number of CCEs in a subspace depends on an aggregation level. The aggregation level determines the size of the control channel, with higher aggregation levels corresponding to larger control channels and more CCEs. By dynamically adjusting the number of CCEs based on the aggregation level, the method optimizes resource allocation and reduces unnecessary overhead in the control channel. The search space is structured to allow the terminal device to monitor and detect control channels efficiently. The subspaces may be configured based on system parameters, such as the terminal device's capabilities or network conditions, to further enhance performance. This approach ensures that the terminal device can reliably receive control information while minimizing resource waste. The method is particularly useful in scenarios where multiple terminal devices share the same search space, as it allows for flexible and efficient control channel management.
5. The method according to claim 4 , wherein the quantity of CCEs in the subspace is equal to a value of the aggregation level, and the search space specific to the terminal device are eventually distributed in the preconfigured control resource set.
This invention relates to wireless communication systems, specifically to methods for distributing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is the efficient allocation and distribution of CCEs within a preconfigured control resource set to optimize resource utilization and reduce search complexity for terminal devices. The method involves determining a subspace within the preconfigured control resource set, where the number of CCEs in this subspace is set equal to the aggregation level. The aggregation level defines the number of CCEs required to form a control channel, which is essential for transmitting control information to the terminal device. The search space, which is specific to the terminal device, is then distributed within this subspace. This ensures that the terminal device can efficiently locate and decode the control information without unnecessary overhead. By aligning the quantity of CCEs in the subspace with the aggregation level, the method minimizes resource waste and improves the reliability of control channel detection. The distribution of the search space within the preconfigured control resource set further ensures that the terminal device can accurately monitor the control channel, enhancing overall system performance. This approach is particularly useful in scenarios where multiple terminal devices share the same control resource set, as it optimizes resource allocation and reduces interference.
6. The method according to claim 4 , wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on the quantity of the plurality of network devices.
This invention relates to wireless communication systems, specifically methods for managing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is efficiently allocating and utilizing CCEs in a search space to improve communication reliability and resource utilization in networks with multiple network devices. The method involves partitioning a search space into multiple subspaces, each specific to a terminal device. Each subspace contains a plurality of CCEs, and the number of CCEs in a subspace is determined by the quantity of network devices in the system. This dynamic allocation ensures that the search space adapts to the network's scale, optimizing resource usage and reducing interference. The subspaces are designed to allow terminal devices to monitor control channels efficiently, improving detection accuracy and reducing processing overhead. The method also includes configuring the subspaces based on network conditions, such as the number of network devices and their transmission requirements. By adjusting the number of CCEs in each subspace, the system can balance load distribution and ensure reliable control channel monitoring. This approach enhances spectral efficiency and supports scalable network deployments.
7. The method according to claim 6 , wherein the CCEs included in the subspace are continuous, and the plurality of subspaces are discretely distributed in the preconfigured control resource set.
The invention relates to wireless communication systems, specifically to methods for configuring and managing control channel elements (CCEs) in a control resource set. The problem addressed is the efficient allocation and distribution of CCEs to improve communication reliability and resource utilization in wireless networks. The method involves organizing CCEs into multiple subspaces within a preconfigured control resource set. Each subspace contains continuous CCEs, meaning the CCEs within a single subspace are adjacent or sequentially allocated without gaps. These subspaces are then distributed discretely within the control resource set, ensuring that the subspaces are separated by non-allocated or differently allocated resources. This discrete distribution helps avoid interference and improves the flexibility of resource allocation. By structuring CCEs into continuous subspaces and distributing them discretely, the method enhances the robustness of control channel transmission, reduces the likelihood of collisions, and optimizes the use of available control resources. This approach is particularly useful in scenarios where multiple users or devices share the same control resource set, requiring efficient and reliable control signaling. The method can be applied in various wireless communication standards, including 5G and beyond, to improve control channel performance.
8. A method of control channel transmission, comprising: allocating, by a network controller based on a quantity of a plurality of network devices accessed by a terminal device, a plurality of resource groups to the plurality of network devices from a preconfigured control resource set, wherein the plurality of resource groups are determined according to a preset rule and the quantity of the plurality of network devices, the preset rule comprising evenly allocating resources in the preconfigured control resource set based on the quantity of the plurality of network devices to obtain the plurality of resource groups, or proportionally allocating resources in the preconfigured control resource set based on channel quality of a plurality of channels between the terminal device and the plurality of network devices to obtain the plurality of resource groups, wherein the plurality of resource groups correspond one-to-one to the plurality of network devices, and resources in any two of the plurality of resource groups do not overlap; and sending, by the network controller, a plurality of pieces of resource group indication information to the plurality of network devices, wherein the plurality of pieces of resource group indication information correspond one-to-one to the plurality of network devices, and each piece of the plurality pieces of resource group indication information indicates a resource location of a resource group available for a corresponding network device.
This invention relates to control channel transmission in wireless networks, specifically addressing efficient resource allocation for multiple network devices accessed by a terminal device. The problem solved is the need to dynamically allocate control channel resources to avoid interference and optimize performance based on network conditions. A network controller allocates a set of resource groups from a preconfigured control resource set to multiple network devices connected to a terminal device. The allocation is based on either an even distribution of resources or a proportional distribution based on channel quality between the terminal and each network device. The resource groups are determined such that each network device receives a unique, non-overlapping set of resources, ensuring no interference between them. The controller then sends resource group indication information to each network device, specifying the location of its allocated resource group. This method ensures efficient use of control channel resources while adapting to varying network conditions, such as the number of connected devices and their respective channel qualities. The approach prevents resource conflicts and improves communication reliability in dense network environments.
9. The method according to claim 8 , wherein each of the plurality of network devices corresponds to a different one of a plurality of subspaces in a search space specific to the terminal device, wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on an aggregation level.
This invention relates to wireless communication systems, specifically improving control channel monitoring efficiency in cellular networks. The problem addressed is the need for terminal devices to efficiently monitor control channels while reducing power consumption and processing overhead. The solution involves distributing control channel monitoring across multiple network devices, each assigned to a distinct subspace within a search space specific to the terminal device. Each subspace contains multiple control channel elements (CCEs), and the number of CCEs varies based on the aggregation level, which determines the size of the control channel. By dividing the search space into subspaces and assigning them to different network devices, the terminal device can monitor control channels more efficiently, reducing the computational and energy demands associated with searching for control information. This approach optimizes resource utilization and improves overall system performance by leveraging parallel processing across multiple network devices. The method ensures that the terminal device can reliably detect control information while minimizing unnecessary processing, particularly in scenarios with high control channel density or varying aggregation levels.
10. The method according to claim 9 , wherein the quantity of CCEs in the subspace is equal to a value of the aggregation level, and the search space specific to the terminal device are eventually distributed in the preconfigured control resource set.
This invention relates to wireless communication systems, specifically to methods for distributing control channel elements (CCEs) in a control resource set for enhanced physical downlink control channel (EPDCCH) monitoring. The problem addressed is the efficient allocation and distribution of CCEs to optimize terminal device performance in detecting control information. The method involves determining a subspace within a preconfigured control resource set for a terminal device, where the quantity of CCEs in this subspace is set equal to the aggregation level. The aggregation level defines the number of CCEs required to form a search space for the terminal device. The search space, which is specific to the terminal device, is then distributed within the preconfigured control resource set. This ensures that the terminal device can efficiently monitor the control channel without unnecessary overhead or resource waste. The approach improves resource utilization and reduces the complexity of control channel detection for the terminal device. The method is particularly useful in scenarios where multiple terminal devices share the same control resource set, as it allows for flexible and efficient allocation of CCEs based on individual device requirements.
11. The method according to claim 9 , wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on the quantity of the plurality of network devices.
This invention relates to wireless communication systems, specifically methods for managing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is efficiently allocating and utilizing CCEs in a search space that is specific to a terminal device, where the number of CCEs depends on the number of network devices involved. The method involves dividing a search space into multiple subspaces, each associated with a terminal device. Each subspace contains multiple CCEs, and the total number of CCEs in a subspace is determined by the number of network devices communicating with the terminal. This dynamic allocation ensures that the search space can adapt to varying network conditions and device configurations. The method optimizes resource usage by adjusting the number of CCEs based on the network device count, improving efficiency in control channel monitoring and reducing unnecessary overhead. The approach is particularly useful in scenarios where multiple network devices interact with a terminal, such as in dense wireless networks or heterogeneous network environments. By tailoring the search space to the specific needs of each terminal, the method enhances reliability and performance in control channel communication.
12. The method according to claim 11 , wherein the CCEs included in the subspace are continuous, and the plurality of subspaces are discretely distributed in the preconfigured control resource set.
This invention relates to wireless communication systems, specifically methods for resource allocation in control channels. The problem addressed is efficient utilization of control channel elements (CCEs) in a preconfigured control resource set to reduce signaling overhead and improve reliability. The method involves partitioning the control resource set into multiple subspaces, where each subspace contains a group of CCEs. The CCEs within each subspace are continuous, meaning they are adjacent in the resource grid, while the subspaces themselves are discretely distributed across the control resource set. This arrangement allows for flexible allocation of control channels while maintaining structural organization. The method further includes selecting a subspace from the plurality of subspaces for transmitting control information, where the selection is based on predefined criteria such as channel conditions or load balancing. The control information is then transmitted using the selected subspace, ensuring efficient use of resources and minimizing interference. By organizing CCEs into continuous subspaces that are discretely distributed, the method improves resource allocation efficiency, reduces signaling overhead, and enhances the reliability of control channel transmissions in wireless communication systems.
13. A method of control channel transmission, comprising: determining, by a terminal device, a plurality of resource groups in a preconfigured control resource set, wherein the plurality of resource groups are determined according to a preset rule and a quantity of a plurality of network devices, the preset rule comprising evenly allocating resources in the preconfigured control resource set based on the quantity of the plurality of network devices to obtain the plurality of resource groups, or proportionally allocating resources in the preconfigured control resource set based on channel quality of a plurality of channels between the terminal device and the plurality of network devices to obtain the plurality of resource groups, wherein the plurality of resource groups correspond one-to-one to a plurality of network devices accessed by the terminal device, and resources in any two of the plurality of resource groups do not overlap; determining, by the terminal device, a plurality of search spaces based on a search space specific to the terminal device and the plurality of resource groups; and receiving, by the terminal device in the plurality of search spaces, a plurality of pieces of physical downlink control information (PDCCHs) sent by the plurality of network devices, wherein the plurality of network devices correspond one-to-one to the plurality of pieces of PDCCHs.
This invention relates to control channel transmission in wireless communication systems, specifically addressing the challenge of efficiently managing control channel resources when a terminal device communicates with multiple network devices. The method involves dynamically allocating control channel resources to avoid interference and optimize performance. The terminal device first determines multiple resource groups within a preconfigured control resource set. These groups are created based on a preset rule and the number of network devices the terminal device is connected to. The allocation can be done either by evenly distributing resources among the network devices or by proportionally distributing them based on the channel quality between the terminal device and each network device. Each resource group is uniquely assigned to a network device, ensuring no overlap between groups. Next, the terminal device determines multiple search spaces by combining a terminal-specific search space with the resource groups. Finally, the terminal device monitors these search spaces to receive physical downlink control information (PDCCH) from the network devices, with each PDCCH corresponding to a specific network device. This approach ensures efficient resource utilization and minimizes interference in multi-device communication scenarios.
14. The method according to claim 13 , wherein the determining, by the terminal device, of the plurality of resource groups in the preconfigured control resource set comprises: receiving, by the terminal device, a plurality of pieces of resource group indication information sent by the plurality of network devices, wherein the plurality of pieces of resource group indication information correspond one-to-one to the plurality of network devices, and each piece of the plurality of pieces of resource group indication information indicates a resource location of a resource group available for a corresponding network device.
This invention relates to wireless communication systems, specifically methods for managing control resource sets in multi-network device environments. The problem addressed is efficient resource allocation in scenarios where a terminal device communicates with multiple network devices, such as in multi-connectivity or coordinated multipoint (CoMP) systems. The solution involves dynamically determining resource groups within a preconfigured control resource set to optimize communication with each network device. The method involves a terminal device receiving resource group indication information from multiple network devices. Each network device sends its own piece of resource group indication information, which specifies the resource location of a resource group available for that specific network device. The terminal device uses this information to identify and assign resource groups within the preconfigured control resource set, ensuring that each network device has access to the appropriate resources for control signaling. This approach allows for flexible and efficient resource management, reducing interference and improving communication reliability in multi-device environments. The solution is particularly useful in scenarios where network devices need to coordinate control signaling with a terminal device, such as in 5G or beyond-5G wireless networks.
15. The method according to claim 13 , wherein the search space specific to the terminal device comprises a plurality of subspaces, which are discretely distributed in the plurality of resource groups.
This invention relates to wireless communication systems, specifically methods for optimizing search space configurations in terminal devices to improve resource allocation efficiency. The problem addressed is the need for flexible and efficient search space management in wireless networks, particularly in scenarios where terminal devices must monitor multiple resource groups for control information. The method involves defining a search space specific to a terminal device, which is divided into multiple subspaces. These subspaces are distributed discretely across a plurality of resource groups, allowing the terminal device to monitor different subspaces in different resource groups. This discrete distribution helps in reducing interference and improving resource utilization by avoiding overlapping or redundant monitoring of the same resources. The method ensures that the terminal device can efficiently track control information across multiple resource groups without excessive overhead or computational burden. The approach is particularly useful in advanced wireless communication systems where dynamic resource allocation and efficient search space management are critical for performance optimization. By discretely distributing subspaces, the method enhances the reliability and efficiency of control information delivery in wireless networks.
16. The method according to claim 13 , wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on an aggregation level.
This invention relates to wireless communication systems, specifically to methods for managing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is efficiently allocating and utilizing CCEs in a search space to improve control channel detection and reduce resource overhead. The method involves defining a search space specific to a terminal device, where the search space is divided into multiple subspaces. Each subspace contains a plurality of CCEs, and the number of CCEs in a subspace depends on an aggregation level. The aggregation level determines how many CCEs are grouped together to form a control channel, with higher aggregation levels using more CCEs. By dynamically adjusting the number of CCEs based on the aggregation level, the system can optimize resource allocation and improve detection reliability. The method also includes transmitting control information to the terminal device using the CCEs in the subspaces. The terminal device monitors the subspaces to detect the control information, leveraging the structured allocation of CCEs to enhance detection efficiency. This approach ensures that the terminal device can reliably receive control signals while minimizing unnecessary resource consumption. The technique is particularly useful in scenarios where multiple terminal devices share the same search space, as it allows for efficient multiplexing of control channels.
17. The method according to claim 16 , wherein the quantity of CCEs in the subspace is equal to a value of the aggregation level, and the search space specific to the terminal device are eventually distributed in the preconfigured control resource set.
This invention relates to wireless communication systems, specifically methods for distributing control channel elements (CCEs) in a control resource set for efficient downlink control signaling. The problem addressed is optimizing the allocation of CCEs to reduce signaling overhead and improve resource utilization in wireless networks, particularly for terminal devices. The method involves determining a subspace within a preconfigured control resource set for distributing search spaces specific to a terminal device. The quantity of CCEs in this subspace is set equal to the aggregation level, which defines the number of CCEs required to transmit a control channel. The search spaces, which are regions where a terminal device monitors for control information, are then distributed within this subspace. This ensures that the control resource set is efficiently utilized by aligning the CCE allocation with the terminal device's monitoring requirements. The method also includes transmitting control information to the terminal device using the distributed search spaces, ensuring reliable and timely delivery of downlink control signals. By dynamically adjusting the CCE allocation based on the aggregation level, the invention minimizes unnecessary resource usage and enhances the efficiency of control channel transmission in wireless communication systems. This approach is particularly beneficial in scenarios with high terminal density or varying channel conditions, where efficient resource management is critical.
18. The method according to claim 16 , wherein each of the plurality of subspaces in the search space specific to the terminal device includes a plurality of control channel elements (CCEs), and a quantity of the plurality of CCEs depends on the quantity of the plurality of network devices.
This invention relates to wireless communication systems, specifically methods for managing control channel elements (CCEs) in a search space for terminal devices. The problem addressed is efficiently allocating and utilizing CCEs in a search space to optimize communication between terminal devices and multiple network devices. The method involves defining a search space specific to a terminal device, which is divided into multiple subspaces. Each subspace contains a plurality of CCEs, and the number of CCEs in each subspace is determined by the quantity of network devices in the system. This dynamic allocation ensures that the search space can adapt to varying network conditions and device densities, improving resource utilization and reducing signaling overhead. The subspaces are structured to allow the terminal device to monitor control channels efficiently, with each subspace corresponding to a subset of the network devices. The quantity of CCEs in each subspace is adjusted based on the number of network devices, ensuring that the search space remains scalable and adaptable. This approach enhances the reliability and efficiency of control channel monitoring, particularly in dense network environments where multiple network devices may be present. The method supports flexible resource allocation, reducing unnecessary overhead while maintaining robust communication links.
19. The method according to claim 18 , wherein the CCEs included in the subspace are continuous, and the plurality of subspaces are discretely distributed in the preconfigured control resource set.
This invention relates to wireless communication systems, specifically methods for managing control channel elements (CCEs) in a preconfigured control resource set. The problem addressed is the efficient allocation and distribution of CCEs to improve communication reliability and resource utilization in wireless networks. The method involves dividing a preconfigured control resource set into multiple subspaces, where each subspace contains a group of CCEs. These CCEs within a subspace are continuous, meaning they are adjacent or sequentially allocated in the resource set. The subspaces themselves are discretely distributed, ensuring that they are separated from one another within the control resource set. This discrete distribution helps in reducing interference and improving the efficiency of control channel monitoring and allocation. The method also includes determining a search space for a user equipment (UE) within one of the subspaces. The search space defines the locations where the UE should monitor for control information, such as downlink control information (DCI). By confining the search space to a specific subspace, the UE can focus its monitoring efforts, reducing power consumption and processing overhead. Additionally, the method may involve transmitting control information to the UE using the CCEs within the determined search space. This ensures that the control information is sent in a structured and predictable manner, enhancing the reliability of communication. The method may also include dynamically adjusting the size or location of the subspaces based on network conditions or UE requirements, allowing for flexible and adaptive control channel management. Overall, this invention provides a structured approach to managing CCEs in a control resource
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November 4, 2019
February 8, 2022
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